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Eccentric planets and stellar evolution as a cause of polluted white dwarfs
A significant fraction of white dwarfs (WDs) are observed to be polluted with metals despite high surface gravities and short settling times. The current theoretical model for this pollution is…
The Effect of Stellar Evolution on Migrating Warm Jupiters
Warm jupiters are an unexpected population of extrasolar planets that are too near to their host to have formed in situ, but distant enough to retain a significant eccentricity in the face of tidal…
An Upper Limit on He Absorption in GJ 1214b
- I. Crossfield, T. Barman, B. Hansen, S. Frewen
- PhysicsResearch Notes of the AAS
- 28 January 2019
CONSTRAINING NEUTRINO COOLING USING THE HOT WHITE DWARF LUMINOSITY FUNCTION IN THE GLOBULAR CLUSTER 47 TUCANAE
- B. Hansen, H. Richer, J. Kalirai, R. Goldsbury, S. Frewen, J. Heyl
- Physics
- 20 July 2015
We present Hubble Space Telescope observations of the upper part ( T eff > 10 4 ?> K) of the white dwarf cooling sequence in the globular cluster 47 Tucanae and measure a luminosity function of hot…
CORONAL RADIATION BELTS
- H. Hudson, A. MacKinnon, M. Derosa, S. Frewen
- Physics, Geology
- 23 May 2009
The magnetic field of the solar corona has a large-scale dipole character, which maps into the bipolar field in the solar wind. Using standard representations of the coronal field, we show that…
Eccentric Planets around Evolved Stars
- S. Frewen
- Physics, Geology
- 2015
Planets are now known to be near ubiquitous around main-sequence stars in our galaxy, as evidenced by the results of radial velocity and transit surveys such as the Kepler mission. In spite of this…